Archive: People and Markets
Friedrich Popken (1940-2024)
On 27 July 2024, Friedrich Popken passed away at the age of 84. As well as being a well-known entrepreneur, he was also a highly esteemed coin collector who supported and promoted many numismatic projects. An obituary by Fritz Rudolf Künker.
The Numismatic Index on 25 June 2023
The numismatic index numindex transparently shows how the prices of selected coins change over time. In the style of a stock index, it was designed for collectors who consider their collection an investment. Find out about the current state of the index.
Archive: Coins, Medals and more

The Suffering of Leiden – A Siege During the Dutch Revolt
The third part of the Beuth Collection that Künker offers in Auction 420 contains many historically interesting emergency and siege coins. They were issued by the Dutch towns besieged by Spain during the 80 Years' War. One of these towns was Leiden, which to this day commemorates the end of the siege every year with a festival.

Planchet Error, Overstrike, Double-Strike, Etc.: Which Errors Affect the Price of a Coin? – Part 1
The price of a coin does not only depend on its rarity and grade. There are many things that can affect a specimen’s value in a positive or negative way. This overview will help you to understand common terms, to use them confidently and to understand them in their context.










Silk, Silver, and Spice: Money Museum’s New Exhibit Explores Treasures of Trade
Today, the Edward C. Rochette Money Museum in Colorado Springs opens its newest exhibition. “The Silk Road(s): A Numismatic Travelogue” will take observers on a journey of commerce, culture, and connections made possible through coinage.
Archaeological State Collection in Munich Reopened
After eight years of renovation, the Bavarian State Archaeological Collection shines in new splendor. Since April 17, 2024, the doors are once again open to visitors from all over the world. The new exhibition rooms were planned and designed by Atelier Brückner.